UtilizaÃÃo da sonda a cintilaÃÃo na captaÃÃo de 131I pela TireÃide / Use of gamma probe in 131I thyroid uptake studies

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

Evaluation of thyroid uptake by administration of radioactive iodine is a well-defined procedure to assess patient thyroid function. In general, nuclear medicine institutions use gamma cameras coupled to pinhole collimators to perform uptake studies. With the growing use of intraoperative gamma probes in the radioguided surgical techniques, several institutions are purchasing this new and portable equipment, which can technically be also employed to assess patientâs thyroid function, permitting further other applications of gamma cameras. The aim of the study was to compare thyroid uptake trails carried out with both gamma camera and intraoperative gamma probe, in order to evaluate the possible use of gamma probe for this purpose. At first a preliminary study of feasibility was carried out using a neck phantom to verify equipment efficiency with known activities of 131I. Henceforth, work data from 12 patients undergone studies of thyroid uptakes were evaluated, 24 hours after oral administration of 370 kBq of 131I. The maximum difference observed between the values obtained with both equipment was 6%, which demonstrated the feasibility of the proposed protocol and made clear that the gamma probe can be useful for thyroid uptake studies

ASSUNTO(S)

tireÃide captaÃÃo de 131i sonda a cintilaÃÃo fisica nuclear

ACESSO AO ARTIGO

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